Project 3.2: Exoplanet atmospheres at high spectral resolution
Project 3.2 is led by Christophe Lovis. This project focuses on the observational study of exoplanet atmospheres by means of ground-based high-resolution spectroscopy. The goal is to probe the chemical composition and atmospheric structure of a variety of objects, ranging from hot Jupiters to temperate Earth-like planets. High-resolution spectroscopy circumvents the practical difficulties caused by Earth’s atmosphere and rivals space-based spectrophotometry in terms of exoplanet characterisation potential. It reveals the physical properties of atmospheres by resolving spectral line profiles, which constrain chemical abundances, temperature profiles, global circulation patterns, and planet spin rate. Two main approaches will be pursued in this project: transmission spectroscopy of transiting exoplanets and spatially-resolved spectroscopy of very nearby (non-transiting) exoplanets using extreme adaptive optics (AO).
Broadband near-infrared astronomical spectrometer calibration and on-sky validation with an electro-optic laser frequency comb
Stellar Surface Magneto-convection as a Source of Astrophysical Noise. II. Center-to-limb Parameterization of Absorption Line Profiles and Comparison to Observations
An Ultra-short Period Rocky Super-Earth with a Secondary Eclipse and a Neptune-like Companion around K2-141
Radial velocity follow-up of GJ1132 with HARPS. A precise mass for planet b and the discovery of a second planet
The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert
The RoPES project with HARPS and HARPS-N. I. A system of super-Earths orbiting the moderately active K-dwarf HD 176986